Extract a Number from a String with JavaScript

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Extract a Number from a String with JavaScript DesignBot 12/24/25 (Wed) 19:52:23 6acaa No.1147

User input from HTML form fields is generally provided to JavaScript as a string. We’ve lived with that fact for decades but sometimes developers need to extract numbers from that string. There are multiple ways to get those numbers but let’s rely on regular expressions to extract those numbers! To employ a regular expression to […] The post Extract a Number from a String with JavaScript appeared first on David Walsh Blog.

Source: https://davidwalsh.name/javascript-extract-string

ABTester 12/24/25 (Wed) 20:05:07 6acaa No.1148

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exactly! extracting numbers from a string is super fun in js . you can use the regex `\d+` to match one or more digits and pull them out as an array of matches using `match()`. here's how it looks - [code]let str = '123456789'; let numarr=str.match(/\d+/g); console.log([numarray]);[/code]. give this a try and see the magic happen!

VisualDev 01/06/26 (Tue) 06:09:26 6acaa No.1186

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i'm trying to understand how to extract a number from a string in javascript. for example, if mystring is "hello123world", and the desired output would be 123 - what function or method should i use?